US5745232A - Apparatus for inspecting deformation of pipe - Google Patents

Apparatus for inspecting deformation of pipe Download PDF

Info

Publication number
US5745232A
US5745232A US08/682,765 US68276596A US5745232A US 5745232 A US5745232 A US 5745232A US 68276596 A US68276596 A US 68276596A US 5745232 A US5745232 A US 5745232A
Authority
US
United States
Prior art keywords
target board
irradiated
pipe
emitting unit
laser beam
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US08/682,765
Other languages
English (en)
Inventor
Kiyoshi Hasegawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kansei Co
Original Assignee
Kansei Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kansei Co filed Critical Kansei Co
Assigned to KANSEI KOGYO CO., LTD. reassignment KANSEI KOGYO CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HASEGAWA, KIYOSHI
Application granted granted Critical
Publication of US5745232A publication Critical patent/US5745232A/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C7/00—Tracing profiles
    • G01C7/06—Tracing profiles of cavities, e.g. tunnels
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures

Definitions

  • This invention relates to an inspection apparatus for inspecting deformation of a pipe such as a sewer or the like.
  • a sewer In general, a sewer is laid under the ground at a suitable gradient in view of topography, geology, a size or diameter of the sewer and a material for the sewer.
  • vibration applied from a vehicle traveling on the ground to the sewer, earthquake, a variation in ground or the like causes differential or uneven settlement of the sewer, leading to deformation or meandering of the sewer, vertical deviation of the sewer from a horizontal plane or the like.
  • Such deformation of the sewer fails to permit sewage to smoothly flow toward a downstream side in the sewer or causes deposition of earth or sand in the deformed portion of the sewer.
  • it is required to inspect deformation of the sewer at a suitable timing or time interval.
  • a laser beam emitting unit A which is provided thereon with a beam source F is fixedly arranged in the pipe so as to be positioned on one end side of the pipe and a target vehicle B is arranged so as to travel from the other end side of the pipe toward the laser beam emitting unit A in the pipe.
  • the target vehicle B is provided thereon with a target board C and the laser beam emitting unit A is adjusted so as to permit a laser beam to be irradiated to or impinged on the target board C.
  • a height L of a bottom K of a portion of the pipe at which the laser beam emitting unit A is positioned is represented by the following expression:
  • the distance R1 and deviation J each are a negative value and the deviation J is obtained by an angle of emission of the laser beam D and a distance between the beam source F and the target board C.
  • Detection of the irradiated position I on the target board C which is irradiated with the laser beam D may be visually carried out through recording of an image of the target board C by a TV mounted on the target vehicle B after the inspection.
  • Deformation of the pipe in a lateral direction thereof may be recognized by continuously or intermittently recording a position of a lateral portion M of the pipe.
  • an object of the present invention is to provide an inspection apparatus which is capable of permitting an irradiated position on a target board to which a beam is irradiated to be accurately and instantaneously detected.
  • It is another object of the present invention is to provide an inspection apparatus which is capable of detecting an irradiated position on a target board to which a beam is irradiated with increased accuracy.
  • an apparatus for inspecting deformation of a pipe which includes a beam emitting unit including a beam source and arranged on one end side of the pipe and a target vehicle including a target board which is irradiated with a beam emitted from the beam source and moved from the other end side of the pipe toward the beam emitting unit, whereby an irradiated position on the target board which is irradiated with the beam is detected to inspect deformation of the pipe.
  • the apparatus of the present invention is featured in that said target board is provided thereon with a plurality of light receiving elements, so that said irradiated position is detected depending on electric signals generated by said light receiving elements when said light receiving elements receive the beam.
  • the light receiving elements on the irradiated portion of the target board each generate an electric signal.
  • the present invention may be suitably constructed in such a manner that two or more such light receiving elements receive the beam to generate an electric signal, resulting in the irradiated position being detected depending on electric signals generated from the plural light receiving elements. In this instance, it is possible to regard a position of the light receiving element generating an electric signal of the highest intensity as the irradiated position.
  • the irradiated position may be detected by operation depending on arrangement of the light receiving elements generating the electric signals and a distribution of a difference in intensity between the electric signals. This permits the irradiated position thus detected to be coincident with a center of an irradiated portion of the target board which may be possibly between the light receiving elements or be more approached to the center, so that the irradiated position may be detected with increased accuracy.
  • the present invention is preferably constructed in such a manner that at least two of the light receiving elements concurrently receive the beam, resulting in the irradiated position on the target board being detected by operation depending on a distribution of a difference in intensity between electric signals generated by the plural light receiving elements which have received the beam.
  • a monitor is arranged so as to monitor an image of the target board fed from a TV camera, so that the target vehicle is stopped when the beam is deviated from the target board or is likely to be deviated therefrom. Then, an angle of emission of a beam from the beam emitting unit is adjusted to impinge the beam on the target board, followed by movement of the target vehicle for restarting of the inspection.
  • the prior art requires to interrupt inspection operation every time when the beam is deviated or likely to be deviated from the target board.
  • an angle of emission of a beam from the beam emitting unit is automatically adjusted depending on a locus of movement of the irradiated position on the target board.
  • FIG. 1 is a schematic view showing the manner of inspection operation of an inspection apparatus according to the present invention
  • FIG. 2 is a front elevation view showing a target board
  • FIG. 3 is a fragmentary enlarged view of the target board shown in FIG. 2;
  • FIG. 4 is a schematic view showing a conventional inspection apparatus.
  • FIG. 1 is a schematic view showing the manner of inspection operation of aninspection apparatus according to the present invention.
  • An inspection apparatus of the present invention includes a laser beam emitting unit (beam emitter) 3 arranged in a pipe or sewer 1 while being secured through a fixture 4 on one end side of the sewer 1 in a longitudinal direction thereof.
  • the laser beam emitting unit 3 includes a beam source 5 for emitting a laser beam, which is arranged so as to be pivotally moved in any desired direction.
  • the inspection apparatus of the present invention includes a crawler target vehicle 9 constructed so as totravel from the other end side of the sewer 1 toward the one end side thereof in the longitudinal direction thereof.
  • the target vehicle 9 is mounted on a distal end portion thereof with a target board 11.
  • the targetboard 11, as shown in FIG. 2 has a plurality of phototransistors 13 each acting as a light receiving element arranged on a front surface thereof ina network-like pattern, so that, for example, three phototransistors 131, 132 and 133 are irradiated with a laser beam 15 emitted from the laser beam emitting unit 3 as shown in FIG. 3, wherein reference numeral 19 designates an irradiated portion of the three phototransistors 131, 132 and 133.
  • the personal computer 17 acts to calculate or compute a center of the irradiated portion 19 or a position in proximity to the center on the basis of or depending on locations of the three phototransistors 131, 132 and 133 and an electric signal distribution depending on a difference in intensity between the electricalsignals, so that the center or position is recognized to be an irradiated position, resulting in a height of a portion of the sewer 1 at which the target vehicle 9 is located being operated or detected by operation. Then, a vertical section of the portion of the sewer is prepared based on data onthe height thus obtained.
  • a distance between the laser beam emitting unit 3 and the target board 11 is calculated or computed on the basis of a distance of movement of the target vehicle 9 from the other end side of the sewer 1.
  • Any suitable photosensor element such as a photodiode other than such a phototransistoras described above may be used as the light receiving element.
  • a CCD image sensor may be arranged on the target board 11.
  • the beam source 5 of the leaser beam emitting unit 3 being pivotally moved while being controlled by the personal computer 17 as indicated at phantom lines in FIG. 1, so that the irradiated position may be returned to the center 21 of the target board 11.
  • a position of the center 21 is calculated or computed on the basis of a locus 23 of movement of the laser beam 15 to a position at which the laser beam 15 is displaced from the target board 11, so that the beam source 5 is pivotally moved so as to permit the laser beam 15 to irradiated to the center 21 thus calculated (see FIG. 2: adjustment is so made that the laser beam 15 is irradiated to the center 21 of the target board 11 at the time of start of the inspection).
  • Inspection of deformation of the sewer in a lateral direction thereof is carried out concurrent with that in the vertical direction thereof described above while calculating a position of a lateral portion of the sewer by operation.
  • radio control of the laser beam emitting unit 3 permits an aboveground wiring for the laser beam emitting unit 3 to be eliminated, tothereby avoid traffic interference.
  • reference numeral 25 designates a control unit for controlling a speed of movement of the target vehicle 9 and movement for return of the target vehicle 9 to the other end side of the sewer.
  • the present invention may be constructed in such a manner that the light receiving elements are arranged so as to permit two or more of such light receiving elements to concurrently receive a beam, resulting in the irradiated position on the target board to which a beam is irradiated being detected depending on a difference in intensity between electric signals from the light receiving elements by operation.
  • Such construction permits inspection of deformation of a sewer or the like to be attained with further increased accuracy.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Pipeline Systems (AREA)
  • Sewage (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
US08/682,765 1994-02-03 1994-03-17 Apparatus for inspecting deformation of pipe Expired - Fee Related US5745232A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP6033095A JP2599704B2 (ja) 1994-02-03 1994-02-03 管路の変形状態調査装置
JP6-033095 1994-02-03
PCT/JP1994/000429 WO1995021367A1 (fr) 1994-02-03 1994-03-17 Dispositif d'inspection des deformations dans un conduit

Publications (1)

Publication Number Publication Date
US5745232A true US5745232A (en) 1998-04-28

Family

ID=12377113

Family Applications (1)

Application Number Title Priority Date Filing Date
US08/682,765 Expired - Fee Related US5745232A (en) 1994-02-03 1994-03-17 Apparatus for inspecting deformation of pipe

Country Status (5)

Country Link
US (1) US5745232A (ja)
EP (1) EP0807801B1 (ja)
JP (1) JP2599704B2 (ja)
DE (1) DE69429020T2 (ja)
WO (1) WO1995021367A1 (ja)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5956135A (en) * 1997-11-03 1999-09-21 Quesnel; Ray J. Pipeline inspection apparatus
WO2010025159A1 (en) * 2008-08-27 2010-03-04 Shell Oil Company Monitoring system for well casing
US20120140247A1 (en) * 2010-12-06 2012-06-07 Mechanical Dynamics & Analysis, Ltd. Methods and apparatus for determining deflection of an equipment foundation
JP2014119360A (ja) * 2012-12-17 2014-06-30 Nippon Steel & Sumitomo Metal 閉水路の堆積物測定装置
CN107747913A (zh) * 2017-11-15 2018-03-02 西安工业大学 一种管道弯曲度测量装置及方法
CN112524359A (zh) * 2020-11-19 2021-03-19 潍坊科技学院 一种集成光纤光栅的智能轴向挤压式管接头

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19747872C2 (de) * 1997-10-20 2000-01-05 Mannesmann Ag System für die Vermessung von Schienen, insbesondere Laufschienen für Krane, Regalbediengeräte, Laufradblöcke
US6415208B1 (en) 1999-11-18 2002-07-02 Mannesmann Ag Apparatus and method for surveying rails, in particular running rails for cranes, shelf handling units, running wheel block
DE10152637A1 (de) 2000-11-30 2002-07-11 Busch Dieter & Co Prueftech Elektrooptisches Messgerät zum Feststellen der Relativlage von Körpern oder von Oberflächenbereichen solcher Körper
JP5427058B2 (ja) * 2010-02-16 2014-02-26 東海旅客鉄道株式会社 検測車の車体歪み測定方法および測定装置
CN107063111A (zh) * 2017-05-24 2017-08-18 安徽科恩新能源有限公司 深基坑顶管作业井坍塌预警系统
CN112013780B (zh) * 2020-08-18 2022-01-28 上海真兰仪表科技股份有限公司 一种燃气管道或流量计受力变形便携检测设备及检测方法
CN115164756B (zh) * 2022-06-29 2023-11-03 上海市安装工程集团有限公司 支吊架变形量智能监测系统及方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3591926A (en) * 1968-02-08 1971-07-13 Contractors Automated Devices Light beam aligning method and apparatus
US3599336A (en) * 1968-11-21 1971-08-17 Technidyne Inc Pipe target system and method for aligning pipes and the like with laser beams
US3631601A (en) * 1969-10-29 1972-01-04 Lloyd J Mcnulty Method and apparatus for laying pipe
US3907435A (en) * 1972-09-29 1975-09-23 Laser Alignment Light beam alignment target and method
US4043679A (en) * 1975-10-20 1977-08-23 Agl Corporation Self-leveling construction alignment laser
US4053238A (en) * 1975-10-20 1977-10-11 A G L Corporation Self-leveling construction alignment laser
US4191207A (en) * 1978-03-23 1980-03-04 Colkhi, Inc. Irrigation pipe control system
US5347136A (en) * 1991-11-25 1994-09-13 Ammann Lasertechnik Ag Conduit construction laser system and laser beam receiver

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4887860A (ja) * 1972-02-19 1973-11-17
GB1436740A (en) * 1973-09-11 1976-05-26 Secr Defence Semi-automated surveying apparatus
JPS557527B2 (ja) * 1974-04-10 1980-02-26
JPH0797020B2 (ja) * 1987-09-19 1995-10-18 株式会社豊田中央研究所 座標測定装置
JPH01232204A (ja) * 1988-03-14 1989-09-18 Iseki Tory Tech Inc 管路の検査方法及び装置並びに作業台車
JPH03142305A (ja) * 1989-10-30 1991-06-18 Kawasaki Steel Corp 表面粗度測定装置
WO1993023323A1 (en) * 1992-05-19 1993-11-25 Boral Johns Perry Industries Pty. Ltd. Guide rail deviation measurement device

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3591926A (en) * 1968-02-08 1971-07-13 Contractors Automated Devices Light beam aligning method and apparatus
US3599336A (en) * 1968-11-21 1971-08-17 Technidyne Inc Pipe target system and method for aligning pipes and the like with laser beams
US3631601A (en) * 1969-10-29 1972-01-04 Lloyd J Mcnulty Method and apparatus for laying pipe
US3907435A (en) * 1972-09-29 1975-09-23 Laser Alignment Light beam alignment target and method
US4043679A (en) * 1975-10-20 1977-08-23 Agl Corporation Self-leveling construction alignment laser
US4053238A (en) * 1975-10-20 1977-10-11 A G L Corporation Self-leveling construction alignment laser
US4191207A (en) * 1978-03-23 1980-03-04 Colkhi, Inc. Irrigation pipe control system
US5347136A (en) * 1991-11-25 1994-09-13 Ammann Lasertechnik Ag Conduit construction laser system and laser beam receiver

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5956135A (en) * 1997-11-03 1999-09-21 Quesnel; Ray J. Pipeline inspection apparatus
WO2010025159A1 (en) * 2008-08-27 2010-03-04 Shell Oil Company Monitoring system for well casing
GB2474996A (en) * 2008-08-27 2011-05-04 Shell Int Research Monitoring system for well casing
US20110185807A1 (en) * 2008-08-27 2011-08-04 Shell Internationale Research Maatschappij B.V. Monitoring system for well casing
GB2474996B (en) * 2008-08-27 2012-12-05 Shell Int Research Monitoring system for well casing
US8973434B2 (en) 2008-08-27 2015-03-10 Shell Oil Company Monitoring system for well casing
US9574434B2 (en) 2008-08-27 2017-02-21 Shell Oil Company Monitoring system for well casing
US20120140247A1 (en) * 2010-12-06 2012-06-07 Mechanical Dynamics & Analysis, Ltd. Methods and apparatus for determining deflection of an equipment foundation
JP2014119360A (ja) * 2012-12-17 2014-06-30 Nippon Steel & Sumitomo Metal 閉水路の堆積物測定装置
CN107747913A (zh) * 2017-11-15 2018-03-02 西安工业大学 一种管道弯曲度测量装置及方法
CN107747913B (zh) * 2017-11-15 2023-12-19 西安工业大学 一种管道弯曲度测量装置及方法
CN112524359A (zh) * 2020-11-19 2021-03-19 潍坊科技学院 一种集成光纤光栅的智能轴向挤压式管接头

Also Published As

Publication number Publication date
EP0807801A4 (en) 1998-07-15
JP2599704B2 (ja) 1997-04-16
JPH07218225A (ja) 1995-08-18
EP0807801A1 (en) 1997-11-19
DE69429020T2 (de) 2002-03-14
EP0807801B1 (en) 2001-11-07
WO1995021367A1 (fr) 1995-08-10
DE69429020D1 (de) 2001-12-13

Similar Documents

Publication Publication Date Title
US5745232A (en) Apparatus for inspecting deformation of pipe
US5699149A (en) Distance measurement apparatus for vehicle
US4656743A (en) Arrangement for determining the position of a hollow section system which is pressed forward
EP3187957B1 (en) Vehicle guidance system and method for orientating a vehicle
KR102626472B1 (ko) 금속판용 자주식 검사 장치 및 검사 방법, 그리고 금속판의 제조 방법
JP2004198330A (ja) 物体の位置検出方法及び装置
JPH10105868A (ja) 車両計測装置及び車両計測方法
KR101225782B1 (ko) 자동용접장치 및 그 제어방법
KR100317957B1 (ko) 레이저를 이용한 벨트 컨베이어의 손상부 인식방법 및 장치
RU2686801C1 (ru) Оптическое измерительное устройство
JP2018073027A (ja) 無人搬送車ガイドシステム及びガイド方法
JPS60142208A (ja) 前方路面状態検知装置
JPH10185514A (ja) コイル位置検出装置
JP3591291B2 (ja) 車両形状計測装置
JP7024746B2 (ja) 金属板用自走式検査装置および金属板用自走式検査方法、ならびに検査システム
JP2845647B2 (ja) 移動物体の自動位置測量方法
JPH08159756A (ja) 障害物検出装置
JPS59164910A (ja) 距離測定装置
JPS63218813A (ja) 埋設管の傾斜度測定装置
JPH10213418A (ja) 形状測定装置
JPH0742093Y2 (ja) 移動体の位置検出装置
JPH08136256A (ja) 搬送台車の位置偏差及び角度偏差の計測装置
JPH11257943A (ja) 走行車両寸法計測装置
JPH0338397B2 (ja)
JPH0610607B2 (ja) 微小間隔測定方法

Legal Events

Date Code Title Description
AS Assignment

Owner name: KANSEI KOGYO CO., LTD., JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HASEGAWA, KIYOSHI;REEL/FRAME:008149/0444

Effective date: 19960715

FEPP Fee payment procedure

Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

FPAY Fee payment

Year of fee payment: 4

REMI Maintenance fee reminder mailed
FPAY Fee payment

Year of fee payment: 8

FEPP Fee payment procedure

Free format text: PAYER NUMBER DE-ASSIGNED (ORIGINAL EVENT CODE: RMPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

REMI Maintenance fee reminder mailed
LAPS Lapse for failure to pay maintenance fees
STCH Information on status: patent discontinuation

Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362

FP Lapsed due to failure to pay maintenance fee

Effective date: 20100428